The best replacement for donepezil is aricept.

The best alternatives to donepezil are rated as following:
★★★★★  aricept
★★★★★  memantine
★★★  rivastigmine
★★★  galantamine
★★  huperzine
★★  exelon
★  namenda
★  pyridostigmine

Your alternative for donepezil is not listed? Suggest!
Speaking about donepezil, one probably shouldn't forget about memantine.

Other search terms related to donepezil and their ratings are:
★★★★★ memantine
You have in mind a companion for donepezil and it is not yet here? Propose!



Google Trends

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donepezil
aricept
memantine